TECHNICAL FIELD
[0001] The present invention relates to an electronic device including a movable unit mounted
on, for example, a dashboard of a vehicle and housed in the dashboard to be freely
taken in and out.
BACKGROUND ART
[0002] For example, a liquid crystal panel is used for a display unit (a movable unit) of
a display device (an electronic device) mounted on a dashboard of a vehicle, by utilizing
an advantage that it can be formed small and thin. However, even if the display unit
is a small and thin liquid crystal panel, because the space in the vehicle is limited,
it is difficult to secure a space for keeping the display unit outside the dashboard
at all times.
[0003] In recent years, therefore, a so-called housing-type display device that is embedded
in a dashboard and used by pulling it out as required has been proposed.
There have been proposed many types of housing-type display devices, and among these,
a flat display unit is popular. The flat display unit is housed substantially horizontally
in a dashboard, and at the time of use, pulled out like a drawer toward the front
and made to stand so that its liquid crystal panel faces an operator.
[0004] In such a drawer-like housing-type display device, a casing for housing a display
unit is fitted in a dashboard of a vehicle with an opening facing the front. Accordingly,
the display unit is embedded in the dashboard when unused, and is pulled out of the
casing toward the front and made to stand during use for screen display operation
(for example, see Patent Document 1).
[0005] At the time of use, if the display unit is a manually-operated type, it is pulled
out of the casing toward the operator's side and made to stand with an appropriate
angle by using a support mechanism on the casing side as a fulcrum. Meanwhile, if
the display unit includes driving means, for example, when a pulling start button
(not shown) or the like is operated, a forwarding mechanism is driven to push the
display unit out from the casing, and the display unit turns to a predetermined angle
via the support mechanism.
[0006] On the other hand, when the display unit is not used, the manually-operated display
unit is brought down horizontally via the support mechanism, and pushed into the casing
and housed. Whereas, in the display unit including the driving means, for example,
when a pullback start button (not shown) is operated, the display unit is brought
down horizontally via the support mechanism and brought back into the casing by the
forwarding mechanism.
DISCLOSURE OF INVENTION
PROBLEM TO BE SOLVED BY THE INVENTION
[0008] In the drawer-like housing-type display device described above, however, because
a sliding operation and a turning operation are performed, it is necessary to perform
positioning reliably, accurately, and with high durability with respect to repeated
operations at various positions important in the operation, for example, as one of
the positions, at a slide housing position. It is important how to make the positioning
right. Generally, as the number of operation shafts increases, a positioning structure
becomes complicated and the number of stoppers also increases, resulting in a cost
increase. Therefore, the positioning structure is one of the problems, for which improvement
is required at the moment.
[0009] On the other hand, in recent years, electronic devices provided in a dashboard have
been increasing. In addition, because a dashboard itself is small in sports utility
vehicles, even the housing-type display device is difficult to be installed. That
is, the display unit can block a part of visual field, make operations of other devices
difficult, or block a cooling air outlet of an air conditioner, at the standing position
where the liquid crystal panel is directed toward an operator so that the display
unit can be used. Therefore, there is an increasing demand for making the display
unit usable not only at the standing position but also at other positions.
There is a similar demand with respect to a drawer-like housing-type manually-operated
device including an operating unit, such as on-board audio equipment.
[0010] According to the conventional technique, however, in the housing-type display unit
and an operating unit (hereinafter, both are referred to as a-movable unit), to position
the movable unit securely and reliably, for example, at the slide housing position
as an important position in the operation, the structure becomes complicated and its
cost increases. Further, in the electronic device where the movable unit can be used
at both positions of a regular standing position and an opposite standing position
where the movable unit turns to the other side and stands in an opposite direction,
the movable unit makes a complicated movement until reaching both the usable positions,
and a positioning mechanism in the movement becomes further complicated. This causes
a cost increase, and therefore there is a demand for improvement.
[0011] The present invention has been achieved to solve the above problems, and it is an
object of the present invention to provide an electronic device in which a movable
unit can be used at a regular standing position where the movable unit is turned to
one direction from a reference position pulled out of a casing and made to stand,
and an opposite standing position where the movable unit is turned to another direction
and made to stand in the opposite direction, wherein positioning can be performed
reliably with a simple structure with respect to a plurality of positions that are
important in the operation, the durability with respect to repeated operations can
be improved due to the simple structure, and as a result, cost reduction can be realized
and reliability can be improved.
MEANS FOR SOLVING PROBLEM
[0012] To overcome the problems mentioned above and achieve the object, according to claim
1, an electronic device includes a movable unit, a turn support member that movably
supports the movable unit between a housing position where the movable unit is housed
in a casing and a reference position where the movable unit is pulled out of the casing,
axially supports one end of the movable unit on the casing side to support the movable
unit turnably between a regular standing position where the movable unit stands in
one direction with respect to the reference position and the reference position, and
also support the movable unit turnably between an opposite standing position where
the movable unit stands in an opposite direction to the one direction and the reference
position, and a stopper that abuts the movable unit when the movable unit turns from
the regular standing position to the reference position to lock and position the movable
unit at the reference position, and abuts the movable unit when the movable unit turns
from the opposite standing position to the reference position to lock and position
the movable unit at the reference position.
BRIEF DESCRIPTION OF DRAWINGS
[0013]
[Fig. 1] Fig. 1 is a perspective view of an electronic device mounted on a dashboard
of a vehicle according to a first embodiment of the present invention.
[Fig. 2] Fig. 2 is a perspective view the electronic device shown in Fig. 1 that is
taken out of the dashboard.
[Fig. 3] Fig. 3 is a perspective view of a movable unit at a reference position.
[Fig. 4] Fig. 4 is a front view of the movable unit at the reference position.
[Fig. 5] Fig. 5 is a side view of the movable unit at the reference position.
[Fig. 6] Fig. 6 is a perspective front view of inside the electronic device for explaining
driving units thereof.
[Fig. 7] Fig. 7 is a perspective side view of inside the electronic device for explaining
the driving units.
[Fig. 8-1] Fig. 8-1 is a perspective view of the movable unit at a housing position.
[Fig. 8-2] Fig. 8-2 is a perspective view of the movable unit in a first direction
state at the reference position.
[Fig. 8-3] Fig. 8-3 is a perspective view of the movable unit at a position between
the reference position and a regular standing position.
[Fig. 8-4] Fig. 8-4 is a perspective view of the movable unit at the regular standing
position.
[Fig. 8-5] Fig. 8-5 is a perspective view of the movable unit in a state between the
first direction state and a second direction state.
[Fig. 8-6] Fig. 8-6 is a perspective view of the movable unit in the second direction
state at the reference position.
[Fig. 8-7] Fig. 8-7 is a perspective view of the movable unit at a position between
the reference position and an opposite standing position.
[Fig. 8-8] Fig. 8-8 is a perspective view of the movable unit at the opposite standing
position.
[Fig. 9-1] Fig. 9-1 is a detailed perspective view of the movable unit shown in Fig.
8-2 in the first direction state at the reference position.
[Fig. 9-2] Fig. 9-2 is a detailed perspective view of the movable unit shown in Fig.
8-4 at the regular standing position.
[Fig. 9-3] Fig. 9-3 is a detailed perspective view of the movable unit shown in Fig.
8-6 in the second direction state at the reference position.
[Fig. 9-4] Fig. 9-4 is a detailed perspective view of the movable unit shown in Fig.
8-8 in the opposite standing position.
[Fig. 10] Fig. 10 is a perspective view of an edge of a first arm according to a second
embodiment of the present invention.
[Fig. 11] Fig. 11 is a perspective view of the edge of the first arm that is disassembled.
EXPLANATIONS OF LETTERS OR NUMERALS
[0014]
- 1
- Movable unit
- 1a
- Display operation surface of movable unit
- 1b
- First claw of movable unit
- 1c
- Second claw of movable unit
- 1m
- Liquid crystal panel (Display surface)
- 1v
- Operation button (Operation surface)
- 2
- Casing
- 2a
- First principal surface of casing
- 2b
- Second principal surface of casing
- 2f
- Opening of casing
- 10
- Turn support member
- 4
- Slide casing
- 5
- First support arm
- 6
- Second support arm
- 7, 8
- Turn shaft
- 11
- Swing casing
- 12
- Rotation shaft
- 20
- Rotation support member
- 30
- Stopper
- 40
- Movement driving unit
- 41
- First motor (for movement)
- 50
- Turn driving unit
- 51
- Second motor (for turn)
- 60
- Rotation driving unit
- 61
- Third motor (for rotation)
- 71
- Housing position
- 72
- Reference position
- 73
- Regular standing position
- 74
- Opposite standing position
- 75
- First direction state
- 76
- Second direction state
BEST MODE(S) FOR CARRYING OUT THE INVENTION
[0015] According to one embodiment of the present invention, an electronic device includes
a movable unit, a turn support member, and a stopper. The turn support member movably
supports the movable unit between a housing position where the movable unit is housed
in a casing and a reference position where the movable unit is pulled out of the casing.
The turn support member also axially supports one end of the movable unit on the casing
side to support the movable unit turnably between a regular standing position where
the movable unit stands in one direction with respect to the reference position and
the reference position as well as between an opposite standing position where the
movable unit stands in an opposite direction to the one direction and the reference
position. The stopper abuts the movable unit when the movable unit turns from the
regular standing position to the reference position to lock the movable unit and position
it at the reference position, and abuts the movable unit when the movable unit turns
from the opposite standing position to the reference position to lock the movable
unit and position it at the reference position.
[0016] In the electronic device, because the stopper locks the movable unit to position
it at the reference position when the movable unit moves from the regular standing
position to the reference position and moves from the opposite standing position to
the reference position, the movable unit can be positioned by one stopper in these
operations. Accordingly, reliable positioning can be realized with a simple structure,
and the durability with respect to repeated operations can be improved due to the
simple structure. As a result, cost reduction can be realized and reliability can
be improved.
[0017] In one aspect of the electronic device, the movable unit includes at least one of
a display surface capable of displaying information thereon and an operation button
that allows an input operation. In this embodiment, the movable unit including the
display surface or the operation button can be used at the standing position and the
opposite standing position, and housed in a housing position.
[0018] In another aspect of the electronic device, the electronic device further includes
a rotation support member that supports the movable unit rotatably about a rotation
shaft extending in an in-and-out direction to and from the casing at the reference
position. The stopper positions the movable unit rotating at the reference position
in a first direction state where one face of the movable unit faces one direction
and in a second direction state where the one face of the movable unit faces a direction
opposite to the one direction. In this aspect, the stopper further positions the movable
unit for rotation in two directions. Accordingly, it is possible to realize the electronic
device, in which the movable unit can be directed in multi-directions, having a simple
structure with less manufacturing cost and improved reliability.
[0019] In another aspect of the electronic device, the movable unit includes first and second
claws at positions substantially symmetrical about the rotation shaft as a symmetrical
axis, and the stopper positions the movable unit in the first and second direction
states by abutting the first and second claws.
[0020] In the above aspect, in the rotation of the movable unit about the rotation shaft,
a structure for abutting the stopper can be realized by a simple means such as a claw,
which enables further simple structure and cost reduction, and improvement in the
reliability.
[0021] In another aspect, the electronic device further includes a turn driving unit that
turns the movable unit from the regular standing position to the reference position
and also from the opposite standing position to the reference position. The stopper
abuts the movable unit when the turn driving unit turns the movable unit from the
regular standing position to the reference position to position and lock the movable
unit at the reference position, and also abuts the movable unit when the turn driving
unit turns a display operating unit from the opposite standing position to the reference
position to position and lock the movable unit at the reference position.
[0022] In the above aspect, only one stopper can position the movable unit even when the
turn driving unit turns the movable unit. Accordingly, a simple structure and cost
reduction can be realized, erroneous operations can be suppressed, and the reliability
can be improved.
[0023] In still another aspect, the electronic device further includes a rotation driving
unit that rotates the movable unit at the reference position. The stopper positions
the movable unit in the second direction state when the rotation driving unit rotates
the movable unit at the reference position from the first direction state to the second
direction state, and also positions the movable unit in the first direction state
when the rotation driving unit rotates the movable unit at the reference position
from the second direction state to the first direction state.
[0024] In the above aspect, only one stopper can position the movable unit even when the
rotation driving unit rotates the movable unit. Accordingly, a simple structure and
cost reduction can be realized, erroneous operations can be suppressed, and the reliability
can be improved.
[0025] The term "display surface" as used herein refers to a screen for displaying information
such as a liquid crystal panel and a flat cathode-ray tube screen. The term "operation
surface" as used herein refers to a surface capable of receiving operation input,
for example, a touch panel or a surface provided with operation buttons.
First embodiment
[0026] Fig. 1 is a perspective view of an electronic device mounted on a dashboard of a
vehicle according to a first embodiment of the present invention. An electronic device
90 includes a box-type casing (not shown) embedded in the dashboard of the vehicle,
and a movable unit 1 housed in the box-type casing to be freely taken in and out like
a drawer. The box-type casing (not shown) is embedded in the dashboard of the vehicle.
The movable unit 1 includes a liquid crystal panel 1m as the display surface and an
operation button 1v as the operation surface on a display operation surface 1a directed
toward an operator.
[0027] Fig. 2 is a perspective view of the electronic device 90 shown in Fig. 1 that is
taken out of the dashboard. Fig. 3 is a perspective view of the movable unit at the
reference position. Fig. 4 is a front view of the movable unit shown in Fig. 3. Fig.
5 is a side view of the movable unit shown Fig. 4. In Figs. 2 to 5, the electronic
device 90 includes the movable unit 1 and a casing 2 that houses the movable unit
1 to be freely taken in and out.
[0028] The movable unit 1 has a rectangular plate form, and is mounted with the liquid crystal
panel 1m on the display operation surface 1a on one side for forming a large-area
face. The operation button 1v is provided on the display operation surface 1a adjacent
to the liquid crystal panel 1m. Plate-like first and second claws 1b and 1c, which
are relevant parts in the embodiment, are arranged in a standing condition on the
side of the movable unit 1 on the operation button 1v side.
[0029] On the other hand, the casing 2 is made of sheet metal in a substantially rectangular
and flat hexahedral box shape, and includes a first principal surface 2a and a second
principal surface 2b opposing the first principal surface 2a having a large area,
and three side surfaces 2c, 2d, and 2e respectively connected to the side of both
the principal surfaces 2a and 2b to form a box. An opening 2f is provided on one side
face of the casing 2, and the movable unit 1 is taken in and out via the opening 2f.
The reference position of the movable unit 1 is a position at which the movable unit
1 slides and is pulled out of the housing position in the casing 2, and specifically,
a position at which the large-area face of the movable unit 1 and the principal surface
2a of the casing 2 are present in parallel planes with each other. When the movable
unit 1 is housed in the casing 2, the movable unit 1 is always positioned at the reference
position and then housed in the casing 2.
[0030] The movable unit 1 is rotatably supported by a rotation support member 20. The rotation
support member 20 is turnably supported by a turn support member 10.
The turn support member 10 includes a slide casing 4 made of sheet metal and housed
in the casing 2, and a pair of first and second arms 5 and 6, with a base being respectively
fixed on both sides of the slide casing 4 and an end respectively protruding from
the opening 2f of the casing 2.
The slide casing 4 is in a rectangular and flat box shape having a longitudinal length
slightly shorter than an inner width of the casing 2 and a short width in a depth
direction, stored in the casing 2 like a drawer, guided by a guide (not shown) provided
in the casing 2, and supported movably in the depth direction of the casing 2.
[0031] The first and second arms 5 and 6 each have a slender thin-plate shape with substantially
the same width as the height of the side of the slide casing 4. Principal surfaces
of the first and second arms 5 and 6 are attached to the sides of the slide casing
4, and the end of each protrudes from the opening 2f of the casing 2 and extending
parallel to the first principal surface 2a of the casing 2. A stopper 30; which is
a relevant part in the embodiment, is formed at the end of the first arm 5 on one
side to protrude in the longitudinal direction of the first arm 5.
[0032] The rotation support member 20 includes a swing casing 11 axially supported rotatably
by the first and second arms 5 and 6 via turn shafts 7 and 8, and a rotation shaft
12 with one end being protruded from the swing casing 11. The side of the movable
unit 1 on the operation button 1v side is fixed to the rotation shaft 12.
[0033] The swing casing 11 is made of sheet metal in a slender and pillar box shape. Fixing
gears 56, 56, to which a driving force is transmitted from the turn driving unit,
are fixed to both ends of the swing casing 11. The driving force is transmitted from
the turn driving unit to the fixing gears 56, 56 for rotating the movable unit 1.
The short turn shafts 7 and 8 are respectively fixed coaxially with the gears 56,
56 on the outward end faces of the fixing gears 56, 56. The swing casing 11, the fixing
gears 56, 56 and the turn shafts 7 and 8 integrally formed in this manner are arranged
between the first and second arms, and axially supported rotatably by both the first
and second arms 5 and 6 by inserting the turn shafts 7 and 8 into a supporting hole
punched on both the arms.
[0034] The rotation shaft 12 extending in a direction orthogonal to the longitudinal direction
of the swing casing 11 (same direction as the moving direction of the slide casing
4) is rotatably supported at the center of the swing casing 11. The movable unit 1
is fixed to one end of the rotation shaft 12 protruding from the swing casing 11.
The fixing gear 64 is penetrated and fitted in the rotation shaft 12. The driving
force is transmitted from the rotation driving unit to the fixing gear 64 for rotating
the movable unit 1.
[0035] The electronic device 90 is mounted with three driving units 40, 50, and 60. The
movement driving unit 40 and the turn driving unit 50 are.installed in the slide casing
4. The rotation driving unit 60 is installed in the swing casing 11. The movement
driving unit 40 is a driving source for taking the movable unit 1 in and out with
respect to the casing 2 by advancing or retracting the slide casing 4. The turn driving
unit 50 is a driving source for turning the movable unit 1 with respect to the casing
2. The rotation driving unit 60 is a driving source for rotating the movable unit
1 with respect to the swing casing 11.
[0036] Fig. 6 is a perspective front view of inside the electronic device for explaining
the respective driving units. Fig. 7 is a perspective side view. In Figs. 6 and 7,
a first motor 41, which is a movement motor for sliding the slide casing 4 in the
casing 2, is provided in the movement driving unit 40. A worm gear 42 is fitted to
the driving shaft of the first motor 41. A shaft 44 is provided to run through the
slide casing 4. The opposite ends of the shaft 44 respectively protrude from the slide
casing 4. Pinion gears 45, 45 are fixed to the protruded portions. A connection gear
group 43 formed by combining a plurality of gears is intervened between the worm gear
42 and the pinion gears 45, 45. The driving force of the first motor 41 is transmitted
to the pinion gears 45, 45 via the worm gear 42, the connection gear group 43, and
the shaft 44.
[0037] On the other hand, a pair of rack gears 46, 46 is arranged parallel with each other
on the opposite sides of the casing 2. The pinion gears 45, 45 are engaged with the
rack gears 46, 46. When the driving force of the first motor 41 is transmitted to
the pinion gears 45, 45, the slide casing 4 slides. At this time, because the driving
force transmitted to the one of the pinion gears 45, 45 is transmitted to the other
pinion gear 45 via the shaft 44, the slide casing 4 can slide properly. The slide
casing 4 advances or retracts in the casing 2 due to normal rotation or reverse rotation
of the first motor 41, however, the slide casing 4 is respectively stopped by a lock
mechanism (not shown) provided on the inner side of the casing 2 and a lock mechanism
(not shown) provided on the opening 2f side of the casing 2. These positions correspond
to the housing position and the reference position of the movable unit.
[0038] A second motor 51, which is a rotation motor for rotating the movable unit 1, is
provided in the turn driving unit 50. A worm gear 52 is fitted to a driving shaft
of the second motor 51. A shaft 55 runs through the side of the swing casing 11 of
the swing casing 11. Shaft gears 54, 54 are fixed to the opposite ends of the shaft
55. A connection gear group 53 intervenes between the worm gear 52 and the lower shaft
gear 54 shown in Fig. 6. The fixing gears 56, 56 are fixed to the opposite ends of
the swing casing 11. The driving force of the second motor 51 is transmitted to the
fixing gears 56, 56 via the worm gear 52, the connection gear group 53, the shaft
55, and the shaft gears 54, 54. Accordingly, the swing casing 11 and the movable unit
1 rotate.
[0039] A third motor 61, which is a rotation motor for rotating the movable unit 1 is provided
on the rotation driving unit 60. A worm gear 62 is fitted to the driving shaft of
the third motor 61. A connection gear group 63 intervenes between the worm gear 62
and the rotation shaft 12. The driving force of the third motor 61 is transmitted
to the rotation shaft 12 via the worm gear 62 and the connection gear group 63, thereby
rotating the movable unit 1.
[0040] The operation is explained with reference to Figs. 8-1 to 8-8 and Figs. 9-1 to 9-4.
Figs. 8-1 to 8-8 are perspective views of the movable unit 1 at various positions
with respect to the casing 2. A support structure of the movable unit 1 is omitted
in the respective diagrams. Fig. 8-1 is a perspective view of the movable unit 1 at
a housing position 71. Fig. 8-2 is a perspective view of the movable unit 1 in a first
direction state 75 at a reference position 72. Fig. 8-3 is a perspective view of the
movable unit 1 at a position between the reference position 72 and a regular standing
position 73. Fig. 8-4 is a perspective view of the movable unit 1 at the regular standing
position 73. Fig. 8-5 is a perspective view of the movable unit 1 in a state between
the first direction state 75 and a second direction state 76. Fig. 8-6 is a perspective
view of the movable unit 1 in the second direction state at the reference position
72. Fig. 8-7 is a perspective view of the movable unit 1 at a position between the
reference position 72 and an opposite standing position 74. Fig. 8-8 is a perspective
view of the movable unit 1 at the opposite standing position 74. Fig. 9-1 is a detailed
perspective view of the movable unit 1 in Fig..8-2. Fig. 9-2 is a detailed perspective
view of the movable unit 1 shown in Fig. 8-4. Fig. 9-3 is a detailed perspective view
of the movable unit 1 shown in Fig. 8-6. Fig. 9-4 is a detailed perspective view of
the movable unit 1 shown in Fig. 8-8.
[0041] In Fig. 8-1, the movable unit 1 is housed so that the whole unit is embedded in the
casing 2 at the housing position 71. When the movable unit 1 is at the housing position
71 shown in Fig. 8-1 and the movement driving unit 40 drives the movable unit 1 in
a normal direction, as shown in Fig. 8-2, the movable unit 1 slides and is pulled
out of the opening 2f, as shown by arrow M1, in a horizontal plane parallel to the
first principal surface 2a of the casing 2. The pulled out position of the movable
unit 1 is the reference position 72. At the reference position 72, the entire movable
unit 1 can be seen and the swing casing 11 can be seen as well. In this state, the
movable unit 1 is in the first direction state 75 with the display operation surface
1a thereof being directed to the second principal surface 2b side of the casing 2.
[0042] Arrow M3 in Fig. 8-3 represents an operation such that the movable unit 1 turns from
the reference position 72 shown in Fig. 8-2 toward the regular standing position 73
(arrow M4 represents an opposite operation). In a state where the movable unit 1 is
in the first direction state 75 at the reference position 72, when the turn driving
unit 50 drives the movable unit 1 in a reverse turning direction, the movable unit
1 turns from the reference position 72 toward the regular standing position 73 as
shown by the arrow M3, by using the turn shafts 7 and 8 as a shaft.
[0043] The movable unit 1 further turns, as shown by arrow M5, from the state shown in Fig.
8-3 to reach the regular standing position 73 shown in Figs. 8-4 and 9-2. The movable
unit 1 is in a usable state at the regular standing position 73, with the liquid crystal
panel 1m facing the operator. The regular standing position 73 is a position where
the movable unit 1 stands on the first principal surface 2a side of the casing 2,
however, the movable unit 1 does not necessarily stand vertically with respect to
the first principal surface 2a, and the movable unit 1 can stand, inclining by a predetermined
angle as shown in Fig. 1. In practice, the regular standing position 73 can be set
to an optional angle by the user. However, the largest angle to be set is about 120
degrees. When the movable unit 1 reaches this angle, for example, an existing position
detector using a sensor or the like detects the inclination, so that the movable unit
1 can be used.
[0044] When the turn driving unit 50 drives the movable unit 1 in a normal turning direction
from the regular standing position 73 shown in Figs. 8-4 and 9-2, the movable unit
1 operates to return to the reference position 72 as shown by arrows M6 (Fig. 8-4)
and M4 (Fig. 8-3). The movable unit 1 finally returns to the reference position 72
as shown in Figs. 8-2 and 9-1. At the last step of the operation, the stopper 30 abuts
the first claw 1b of the movable unit 1. The stopper 30 then accurately positions
the movable unit 1 at the reference position 72. At the reference position 72, when
the movement driving unit 40 drives the movable unit 1 in a reverse direction, the
movable unit 1 slides, as shown by arrow M2, to return to the housing position 71
shown in Fig. 8-1.
[0045] Arrow M7 in Fig. 8-5 represents a condition where the movable unit 1 rotates from
the first direction state 75 shown in Fig. 8-2 toward the second direction state 76
(arrow M8 depicts an opposite operation). In a state where the movable unit 1 is in
the first direction state 75 at the reference position 72, when the rotation driving
unit 60 drives the movable unit 1 in a normal rotation direction, the movable unit
1 rotates about the rotation shaft 12 as shown by the arrow M7.
[0046] In Figs. 8-6 and 9-3, the display operation surface 1a of the movable unit 1 is in
the second direction state 76 directed to the first principal surface 2a side of the
casing 2 at the reference position 72. That is, the second direction state 76 is in
a so-called a reverse state, rotated by 180 degrees about the rotation shaft 12 from
the first direction state 75 shown in Fig. 8-2. In an operation in which the movable
unit 1 further rotates in a direction of the arrow M7 from the state shown in Fig.
8-5 to reach the second direction state 76, at the last step of the operation, the
stopper 30 abuts the second claw 1c of the movable unit 1 to accurately position the
movable unit 1 in the second direction state 76. The position of the movable unit
1 is detected by a sensor (not shown), or the movable unit 1 can rotate only at the
reference position 72 by a predetermined operation regulating structure. That is,
the movable unit 1 cannot rotate at a position other than the reference position 72.
[0047] In the embodiment, the term "turn" refers to reciprocating motion of the movable
unit 1 between the reference position 72 and the regular standing position 73 (the
same applies to the opposite standing position 74) about the turn shafts 7 and 8 as
an axis, that is, reciprocating movement within an angular range of roughly 120 degrees
at maximum about the turn shafts 7 and 8 as an axis. On the other hand, the term "rotation"
refers to reciprocating motion of the movable unit 1 between the first direction state
75 and the second direction state 76 about the rotation shaft 12 as an axis, that
is, reciprocating movement within an angular range of 180 degrees about the rotation
shaft 12 as an axis.
[0048] Arrow M11 in Fig. 8-7 represents a condition where the movable unit 1 turns from
the reference position 72 toward the opposite standing position 74 (arrow M12 represents
an opposite operation). At the reference position 72 shown in Figs. 8-6 and 9-3, when
the turn driving unit 50 drives the movable unit 1 in the normal turning direction
from a state where the movable unit 1 is in the second direction state 76, the movable
unit 1 turns from the reference position 72 toward the opposite standing position
74 as shown by arrows M9 (Fig. 8-6), M11 (Fig. 8-7), and M13 (Fig. 8-8), using the
turn shafts 7 and 8 as an axis.
[0049] The movable unit 1 reaches the opposite standing position 74 shown in Figs. 8-8 and
9-4. The opposite standing position 74 includes not only a position where the movable
unit 1 stands vertically with respect to the second principal surface 2b but also
a state where the movable unit 1 inclines by a predetermined angle, as in the regular
standing position 73. Actually, the opposite standing position 74 is a position at
which the movable unit 1 turns by about 120 degrees at maximum from the reference
position 72 toward a direction opposite to the regular standing position 73. The movable
unit 1 is in a usable state at the opposite standing position 74, with the liquid
crystal panel 1m of the movable unit 1 facing the operator. Although the liquid crystal
panel 1m is upside-down as compared to the regular standing position 73, an image
is controlled by an image controller (not shown) and displayed in a normal direction.
A detector (not shown) such as a sensor detects whether the movable unit 1 is at the
regular standing position 73 or at the opposite standing position 74, and the detection
result is output to the image controller.
[0050] When the turn driving unit 50 drives the movable unit 1 in a reverse direction from
the opposite standing position 74 shown in Figs. 8-8 and 9-4, as shown by arrows M14
(Fig. 8-8), M12 (Fig. 8-7), and M10 (Fig. 8-6), the movable unit 1 operates to return
to the reference position 72 shown in Figs. 8-6 and 9-3. At the last step of the operation,
the stopper 30 abuts the second claw 1c of the movable unit 1. The stopper 30 accurately
positions the movable unit 1 at the reference position 72.
[0051] In the state where the movable unit 1 is in the second direction state 76 at the
reference position 72 shown in Fig. 8-6 and 9-3, when the rotation driving unit 60
drives the movable unit 1 in a reverse rotation direction, the movable unit 1 rotates.
The arrow M8 in Fig. 8-5 represents a condition where the movable unit 1 rotates from
the second direction state 76 shown in Fig. 8-6 to the first direction state 75. The
movable unit 1 then returns to the first direction state 75 at the reference position
72 shown in Figs. 8-2 and 9-1.
[0052] In Figs. 8-2 and 9-1, the movable unit 1 returns to the first direction state 75
where the display operation surface 1a is directed to the second principal surface
2b side of the casing 2. In the operation in which the movable unit 1 reaches the
reference position 72 from the state shown in Fig. 8-5, the stopper 30 abuts the first
claw 1b of the movable unit 1 at the last step of the operation, to accurately position
the movable unit 1 in the first direction state 75.
[0053] The electronic device 90 according to the embodiment includes the movable unit 1,
the turn support member 10 that rotatably supports the movable unit 1, and the stopper
30 that positions the movable unit 1 at an important position in rotating operation.
That is, the turn support member 10 movably supports the movable unit 1 between the
housing position 71 for storing the movable unit 1 in the casing 2 and the reference
position 72 where the movable unit 1 is pulled out of the casing 2, and axially supports
one end of the movable unit 1 on the casing 2 side at the reference position 72 to
support the movable unit 1 turnably between the regular standing position 73 and the
reference position 72, and between the opposite standing position 74 and the reference
position 72. The stopper 30 abuts the movable unit 1 when the movable unit 1 moves
from the regular standing position 73 to the reference position 72 to lock the movable
unit 1 to be positioned at the reference position 72, and abuts the movable unit 1
when the movable unit 1 moves from the opposite standing position 74 to the reference
position 72 to lock the movable unit 1 to be positioned at the reference position
72. Therefore, the movable unit 1 can be positioned at the important positions in
the operation by the one stopper 30 in both operations, and hence, the movable unit
1 can be securely positioned by a simple structure, with the durability with respect
to the repeated operations being improved due to the simple structure. As a result,
cots reduction can be realized, thereby improving the reliability.
[0054] Further, the electronic device 90 includes the rotation support member 20 that rotatably
supports the movable unit 1 about the axis of rotation. The stopper 30 positions the
movable unit 1 rotating at the reference position 72 in the first direction state
75 where a first face is directed to a first direction, that is, for example, the
display operation surface 1a is directed to the second principal surface 2b, and in
the second direction state 76 where the first face is directed to a direction opposite
to the first direction, that is, the display operation surface 1a is rotated from
the first direction state 75 by 180 degrees. Accordingly, the stopper 30 can position
the movable unit 1 in the two rotating operations. As a result, the one stopper 30
can position the movable unit 1 in two turning operations and two rotating operations.
[0055] The movable unit 1 includes the first and second claws 1b and 1c at positions substantially
symmetrical about the rotation shaft 12 as an symmetrical axis. The stopper 30 abuts
the first and second claws 1b and 1c, to lock the movable unit 1 at the reference
position 72, thereby positioning the movable unit 1 in the first and second direction
states 75 and 76. Therefore, in rotation about the rotation shaft 12, a structure
for abutting the stopper can be realized by a simple structure such as the first and
second claws 1b and 1c, thereby realizing a simple structure and cost reduction, and
improving the reliability.
[0056] The electronic device 90 further includes the turn driving unit 50 that moves the
movable unit 1 from the regular standing position 73 to the reference position 72
and from the opposite standing position 74 to the reference position 72. When the
turn driving unit 50 moves the movable unit 1 from the regular standing position 73
to the reference position 72, the stopper 30 abuts the movable unit 1 to lock the
movable unit 1 to be positioned at the reference position 72, and when the turn driving
unit 50 moves the movable unit 1 from the opposite standing position 74 to the reference
position 72, the stopper abuts the movable unit 1 to lock the movable unit 1 to be
positioned at the reference position 72. Thus, even when the turn driving unit 50
as driving means turns the movable unit 1, the one stopper 30 can position the movable
unit 1, thereby enabling a simple structure and cost reduction, suppressing erroneous
operations, and improving the reliability.
[0057] Further, the electronic device 90 includes the rotation driving unit 60 that rotates
the movable unit 1 at the reference position 72, and the stopper 30 positions the
movable unit 1 in the second direction state 76 when the rotation driving unit 60
normally rotates the movable unit 1 at the reference position 72 from the first direction
state 75 to the second direction state 76, and positions the movable unit 1 in the
first direction state 75 when the rotation driving unit 60 reversely rotates the movable
unit 1 at the reference position 72 from the second direction state 76 to the first
direction state 75. Accordingly, even when the rotation driving unit 60 as the driving
means rotates the movable unit 1, the one stopper 30 can position the movable unit
1, thereby enabling a simple structure and cost reduction, suppressing erroneous operations,
and improving the reliability.
[0058] In the embodiment, the movable unit 1 is moved between the housing position 71 and
the reference position 72 by the movement driving unit 40, turned with respect to
the casing 2 by the turn driving unit 50, and rotated by the rotation driving unit
60. That is, the movable unit 1 is electrically driven. The stopper 30, which is a
structural feature in the embodiment, demonstrates the effect well in an electronic
device including such driving means. However, the driving means may not be necessarily
provided. That is, even when the driving means are omitted and the movable unit is
manually operated, the structural feature in the embodiment can demonstrate the effect.
In other words, if the turn support member 10 and the rotation support member 20 are
provided, the operator can manually pull out the movable unit 1 to use the movable
unit 1 in a predetermined direction. Even in this case, the stopper 30 can position
the movable unit 1 in an important position in the operation.
[0059] Further, the movable unit 1 in the embodiment has the liquid crystal panel 1m as
the display surface and the operation button 1v as the operation surface on the display
operation surface 1a. However, the one provided on the display operation surface 1a
can be only the liquid crystal panel 1m or the operation button 1v. Further, the display
surface can be not only the liquid crystal panel 1m but also a thin cathode-ray tube
or a diode screen, and the operation surface can be not only the operation button
1v but also a touch panel or a keyboard.
Second embodiment
[0060] Fig. 10 is a perspective view of an edge of the first arm 5 according to a second
embodiment of the present invention. Fig. 11 is a perspective view of the edge of
the first arm 5 that is disassembled. The position of a stopper 31 provided at the
edge of the first arm 5 of the electronic device according to the embodiment can be
finely adjusted in the turning direction of the movable unit (not shown). Other configurations
are the same as those of the first embodiment.
[0061] In Fig. 10 and Fig. 11, engagement grooves 5a having a continuous hill and valley
shape in a circumferential direction are formed over the whole circumference of a
through hole for axially supporting the turn shaft 8 (Fig. 9-1) on the principal surface
on one side of the edge of the first arm 5. That is, the plurality of engagement grooves
5a is radially formed about the through hole. A female screw hole 5b is provided adjusting
to the engagement grooves 5a.
[0062] An adjusting plate 17 is fitted to be overlapped on the engagement grooves 5a. The
adjusting plate 17 has substantially a disc-like shape, and non-engagement grooves
17a having the same shape as that of the engagement grooves 5a are formed on the principal
surface on one side thereof. The convex stopper 31 is formed to protrude radially
at a predetermined position on a margin of the adjusting plate 17. The stopper 31
functions in the similar manner to that of the stopper 30 according to the first embodiment.
The first arm 5 and the adjusting plate 17 are coupled with each other by a coupling
member 18, with the engagement groove 5a and the non-engagement groove 17a engaged
with each other.
[0063] The coupling member 18 is formed of a disc-like body and three claws extending from
a peripheral line of the body. Three claws are formed of two L-shape claws 18a, 18a
having an L-shape, and one fastening claw 18b having a crank shape in cross section
and a through hole 18c punched therein, into which a screw 19 is inserted. The coupling
member 18 couples the first arm 5 with the adjusting plate 17, by engaging hooks at
the edges of the L-shape claws 18a, 18a with a rear face of the first arm 5, which
is an opposite face of the face having the engagement grooves 5a and fastening the
remaining fastening claw 18b by the screw 19 that screws into the female screw hole
5b, with the principal surface of the body being stuck to the adjusting plate 17.
[0064] In the electronic device according to the second embodiment, by shifting the engagement
of the engagement grooves 5a and the non-engagement grooves 17a the stopper 31 can
be shifted with a small angle about an axis of the turn shaft 8 (Fig. 9-1). Accordingly,
the position of the movable unit 1 at the reference position 72 shown in Fig. 9-1
can be finely adjusted in the turning direction. Therefore, even if the position of
the movable unit 1 at the reference position 72 is slightly shifted in the turning
direction, due to a manufacturing error or permanent set in fatigue by being used
for long time, the movable unit 1 can be corrected to an appropriate position.
INDUSTRIAL APPLICABILITY
[0065] The electronic device according to the present invention is suitably applied as an
electronic device installed in, for example, the dashboard of a vehicle. The electronic
device according to the present invention is suitably applied not only to a device
installed in the dashboard of a vehicle, but also a device, such as a notebook personal
computer, a PDA, and a mobile phone, including a movable unit that is turned or rotated
in a predetermined direction after being pulled out of a casing for use.